CVE-2025-13317— Appointment Booking Calendar <= 1.3.96 - Missing Authorization to Arbitrary Booking Confirmation via 'cpabc_ipncheck' Parameter
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I. Basic Information for CVE-2025-13317
Vulnerability Information
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Vulnerability Title
Appointment Booking Calendar <= 1.3.96 - Missing Authorization to Arbitrary Booking Confirmation via 'cpabc_ipncheck' Parameter
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Appointment Booking Calendar plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.3.96. This is due to the plugin exposing an unauthenticated booking processing endpoint (cpabc_appointments_check_IPN_verification) that trusts attacker-supplied payment notifications without verifying their origin, authenticity, or requiring proper authorization checks. This makes it possible for unauthenticated attackers to arbitrarily confirm bookings and insert them into the live calendar via the 'cpabc_ipncheck' parameter, triggering administrative and customer notification emails and disrupting operations.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Appointment Booking Calendar 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Appointment Booking Calendar 1.3.96及之前版本存在安全漏洞，该漏洞源于缺少授权检查，可能导致未授权预订确认。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| codepeople | Appointment Booking Calendar | * ~ 1.3.96 | - |
II. Public POCs for CVE-2025-13317
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · codepeople · 2025-11-22 · 3 CVEs total
| CVE-2025-13384 | 7.5 HIGH | CP Contact Form with PayPal <= 1.3.56 - Missing Authorization to Unauthenticated Arbitrary |
| CVE-2025-13318 | 5.3 MEDIUM | Booking Calendar Contact Form <= 1.2.60 - Missing Authorization to Unauthenticated Arbitra |
IV. Related Vulnerabilities
Same product: Appointment Booking Calendar
Same vendor: codepeople
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